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cec.c
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cec.c
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/*
pidvbip - tvheadend client for the Raspberry Pi
(C) Dave Chapman 2012-2013
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <pthread.h>
#include <libcec/cecc.h>
#define CEC_CONFIG_VERSION CEC_CLIENT_VERSION_CURRENT
struct cec_key_queue {
char keys[10];
int numkeys;
pthread_mutex_t mutex;
};
/* Global variables to hold the libcec status */
static libcec_configuration cec_config;
static ICECCallbacks cec_callbacks;
static struct cec_key_queue key_queue;
static int CecLogMessage(void *(cbParam), const cec_log_message message)
{
//fprintf(stderr,"LOG (%d): %s\n",message.level,message.message);
return 0;
}
char cec_get_keypress(void)
{
int res;
pthread_mutex_lock(&key_queue.mutex);
if (key_queue.numkeys == 0) {
res = -1;
} else {
res = key_queue.keys[0];
key_queue.numkeys--;
if (key_queue.numkeys > 0) {
memmove(key_queue.keys,key_queue.keys+1,key_queue.numkeys);
}
}
pthread_mutex_unlock(&key_queue.mutex);
return res;
}
static void cec_add_keypress(char key)
{
pthread_mutex_lock(&key_queue.mutex);
if (key_queue.numkeys < sizeof(key_queue.keys)) {
fprintf(stderr,"[CEC] Queuing keypress '%c', numkeys=%d\n",key,key_queue.numkeys);
key_queue.keys[key_queue.numkeys++]=key;
}
pthread_mutex_unlock(&key_queue.mutex);
}
static int CecKeyPress(void *(cbParam), const cec_keypress (key))
{
fprintf(stderr,"Key: %d, duration: %d\n",key.keycode,key.duration);
if (key.duration == 0) { // Key down event
switch (key.keycode) {
case CEC_USER_CONTROL_CODE_SELECT:
case CEC_USER_CONTROL_CODE_DISPLAY_INFORMATION:
cec_add_keypress('i'); break;
case CEC_USER_CONTROL_CODE_CHANNEL_UP:
cec_add_keypress('n'); break;
case CEC_USER_CONTROL_CODE_CHANNEL_DOWN:
cec_add_keypress('p'); break;
case CEC_USER_CONTROL_CODE_NUMBER0:
cec_add_keypress('0'); break;
case CEC_USER_CONTROL_CODE_NUMBER1:
cec_add_keypress('1'); break;
case CEC_USER_CONTROL_CODE_NUMBER2:
cec_add_keypress('2'); break;
case CEC_USER_CONTROL_CODE_NUMBER3:
cec_add_keypress('3'); break;
case CEC_USER_CONTROL_CODE_NUMBER4:
cec_add_keypress('4'); break;
case CEC_USER_CONTROL_CODE_NUMBER5:
cec_add_keypress('5'); break;
case CEC_USER_CONTROL_CODE_NUMBER6:
cec_add_keypress('6'); break;
case CEC_USER_CONTROL_CODE_NUMBER7:
cec_add_keypress('7'); break;
case CEC_USER_CONTROL_CODE_NUMBER8:
cec_add_keypress('8'); break;
case CEC_USER_CONTROL_CODE_NUMBER9:
cec_add_keypress('9'); break;
case CEC_USER_CONTROL_CODE_UP:
cec_add_keypress('u'); break;
case CEC_USER_CONTROL_CODE_DOWN:
cec_add_keypress('d'); break;
case CEC_USER_CONTROL_CODE_LEFT:
cec_add_keypress('l'); break;
case CEC_USER_CONTROL_CODE_RIGHT:
cec_add_keypress('r'); break;
case CEC_USER_CONTROL_CODE_PAUSE:
case CEC_USER_CONTROL_CODE_F2_RED:
cec_add_keypress(' '); break;
default:
break;
}
}
return 0;
}
static int CecCommand(void *(cbParam), const cec_command (command))
{
switch (command.opcode) {
case CEC_OPCODE_STANDBY:
fprintf(stderr,"<Standby> command received\n");
cec_add_keypress('q');
break;
default:
fprintf(stderr,"Cmd: initiator=%d, destination=%d, opcode=0x%02x\n",command.initiator,command.destination,command.opcode);
break;
}
return 0;
}
static void CecSourceActivated(void *(cbParam),const cec_logical_address logical_address, const uint8_t activated)
{
fprintf(stderr,"[CEC] Source %sactivated\n",(activated ? "" : "de"));
}
static int CecAlert(void *(cbParam), const libcec_alert type, const libcec_parameter (param))
{
fprintf(stderr,"CecAlert - type=%d\n",type);
switch (type)
{
case CEC_ALERT_CONNECTION_LOST:
printf("Connection lost - exiting\n");
exit(1);
break;
default:
break;
}
return 0;
}
static void clear_cec_logical_addresses(cec_logical_addresses* addresses)
{
int i;
addresses->primary = CECDEVICE_UNREGISTERED;
for (i = 0; i < 16; i++)
addresses->addresses[i] = 0;
}
static void set_cec_logical_address(cec_logical_addresses* addresses, cec_logical_address address)
{
if (addresses->primary == CECDEVICE_UNREGISTERED)
addresses->primary = address;
addresses->addresses[(int) address] = 1;
}
static void clear_config(libcec_configuration* config)
{
int i;
config->iPhysicalAddress = CEC_PHYSICAL_ADDRESS_TV;
config->baseDevice = (cec_logical_address)CEC_DEFAULT_BASE_DEVICE;
config->iHDMIPort = CEC_DEFAULT_HDMI_PORT;
config->tvVendor = (uint64_t)CEC_VENDOR_UNKNOWN;
config->clientVersion = (uint32_t)CEC_CLIENT_VERSION_CURRENT;
config->serverVersion = (uint32_t)CEC_SERVER_VERSION_CURRENT;
config->bAutodetectAddress = 0;
config->bGetSettingsFromROM = CEC_DEFAULT_SETTING_GET_SETTINGS_FROM_ROM;
config->bUseTVMenuLanguage = CEC_DEFAULT_SETTING_USE_TV_MENU_LANGUAGE;
config->bActivateSource = CEC_DEFAULT_SETTING_ACTIVATE_SOURCE;
config->bPowerOffScreensaver = CEC_DEFAULT_SETTING_POWER_OFF_SCREENSAVER;
config->bPowerOffOnStandby = CEC_DEFAULT_SETTING_POWER_OFF_ON_STANDBY;
config->bShutdownOnStandby = CEC_DEFAULT_SETTING_SHUTDOWN_ON_STANDBY;
config->bSendInactiveSource = CEC_DEFAULT_SETTING_SEND_INACTIVE_SOURCE;
config->iFirmwareVersion = CEC_FW_VERSION_UNKNOWN;
config->bPowerOffDevicesOnStandby = CEC_DEFAULT_SETTING_POWER_OFF_DEVICES_STANDBY;
memcpy(config->strDeviceLanguage, CEC_DEFAULT_DEVICE_LANGUAGE, 3);
config->iFirmwareBuildDate = CEC_FW_BUILD_UNKNOWN;
config->bMonitorOnly = 0;
config->cecVersion = (cec_version)CEC_DEFAULT_SETTING_CEC_VERSION;
config->adapterType = ADAPTERTYPE_UNKNOWN;
config->iDoubleTapTimeoutMs = CEC_DOUBLE_TAP_TIMEOUT_MS;
config->comboKey = CEC_USER_CONTROL_CODE_STOP;
config->iComboKeyTimeoutMs = CEC_DEFAULT_COMBO_TIMEOUT_MS;
memset(config->strDeviceName, 0, 13);
/* deviceTypes.Clear(); */
for (i = 0; i < 5; i++)
config->deviceTypes.types[i] = CEC_DEVICE_TYPE_RESERVED;
clear_cec_logical_addresses(&config->logicalAddresses);
clear_cec_logical_addresses(&config->wakeDevices);
clear_cec_logical_addresses(&config->powerOffDevices);
#if CEC_DEFAULT_SETTING_POWER_OFF_SHUTDOWN == 1
set_cec_logical_address(&config->powerOffDevices,CECDEVICE_BROADCAST);
#endif
#if CEC_DEFAULT_SETTING_ACTIVATE_SOURCE == 1
set_cec_logical_address(&config->wakeDevices,CECDEVICE_TV);
#endif
config->callbackParam = NULL;
config->callbacks = NULL;
}
static void clear_callbacks(ICECCallbacks* cec_callbacks)
{
cec_callbacks->CBCecLogMessage = NULL;
cec_callbacks->CBCecKeyPress = NULL;
cec_callbacks->CBCecCommand = NULL;
cec_callbacks->CBCecConfigurationChanged = NULL;
cec_callbacks->CBCecAlert = NULL;
cec_callbacks->CBCecMenuStateChanged = NULL;
cec_callbacks->CBCecSourceActivated = NULL;
}
int cec_init(int init_video)
{
int res;
/* Set the CEC configuration */
clear_config(&cec_config);
snprintf(cec_config.strDeviceName, 13, "pidvbip");
cec_config.clientVersion = CEC_CONFIG_VERSION;
cec_config.bActivateSource = 0;
/* Say we are a recording/tuner/playback device */
cec_config.deviceTypes.types[0] = CEC_DEVICE_TYPE_RECORDING_DEVICE;
/* Set the callbacks */
clear_callbacks(&cec_callbacks);
cec_callbacks.CBCecLogMessage = &CecLogMessage;
cec_callbacks.CBCecKeyPress = &CecKeyPress;
cec_callbacks.CBCecCommand = &CecCommand;
cec_callbacks.CBCecAlert = &CecAlert;
cec_callbacks.CBCecSourceActivated= &CecSourceActivated;
cec_config.callbacks = &cec_callbacks;
/* Initialise the library */
if (!cec_initialise(&cec_config)) {
fprintf(stderr,"Error initialising libcec, aborting\n");
return 1;
}
if (init_video) {
/* init video on targets that need this */
cec_init_video_standalone();
}
/* Locate CEC device */
cec_adapter devices[10];
int nadapters = cec_find_adapters(devices, 10, NULL);
if (nadapters <= 0) {
fprintf(stderr,"Error, no CEC adapters found.\n");
cec_destroy();
return 2;
}
if (nadapters > 1) {
fprintf(stderr,"WARNING: %d adapters found, using first.\n",nadapters);
}
fprintf(stderr,"Using CEC adapter \"%s\", path=\"%s\"\n",devices[0].comm,devices[0].path);
/* Open device with a 10000ms (10s) timeout */
if (!cec_open(devices[0].comm, CEC_DEFAULT_CONNECT_TIMEOUT)) {
fprintf(stderr,"Error, cannot open device %s\n",devices[0].comm);
cec_destroy();
return 3;
}
/* Enable callbacks, first parameter is the callback data passed to every callback */
cec_enable_callbacks(NULL, &cec_callbacks);
/* Get the menu language of the TV */
cec_menu_language language;
cec_get_device_menu_language(CEC_DEFAULT_BASE_DEVICE, &language);
fprintf(stderr,"TV menu language: \"%c%c%c\"\n",language.language[0],language.language[1],language.language[2]);
/* Get the power status of the TV */
cec_power_status power_status = cec_get_device_power_status(CEC_DEFAULT_BASE_DEVICE);
fprintf(stderr,"TV Power Status: %d\n",power_status);
/* Select ourselves as the source - this will also power-on the TV if needed */
fprintf(stderr,"Setting ourselves as the source\n");
cec_set_active_source(CEC_DEVICE_TYPE_RECORDING_DEVICE);
/* Clear the keypress queue */
key_queue.numkeys = 0;
pthread_mutex_init(&key_queue.mutex,NULL);
return 0;
}
int cec_done(int poweroff)
{
if (poweroff) {
/* Power-off the TV */
cec_standby_devices(CEC_DEFAULT_BASE_DEVICE);
}
/* Cleanup */
cec_destroy();
return 0;
}